base_addr : mptl::SPI_Common< _base_addr > , mptl::TIM_common< _base_addr >
clk_freq : mptl::spi_stm32_common< _spi_no, system_clock_type >
crlf : mptl::usart_irq_stream< usart_type, _fifo_type, _crlf, debug_irqs >
irq_count : mptl::usart_irq_stream< usart_type, _fifo_type, _crlf, debug_irqs >
irq_errors : mptl::usart_irq_stream< usart_type, _fifo_type, _crlf, debug_irqs >
rx_fifo : mptl::usart_irq_stream< usart_type, _fifo_type, _crlf, debug_irqs >
spi_no : mptl::spi_stm32_common< _spi_no, system_clock_type >
tx_fifo : mptl::usart_irq_stream< usart_type, _fifo_type, _crlf, debug_irqs >
usart_no : mptl::usart_stm32_common< _usart_no, system_clock_type >